Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
“DELTA” – THE TOP OF COMPACTIBILITY
Readers of our magazine are probably familiar with the abbreviation TX-200. This was the name of the autotricycle of the original design, created by the most famous Kharkiv resident in the...
SCREW PLUS BAR…
...make a surface gauge. In the block of hard wood drilled a hole in which is screwed into the screw. Use a screwdriver to set the distance required for the application of risks. ...
